Jambs, Gothic, iii. 137. Jesting, evils of, iii. 129. Jesuits, their restricted power in Venice, i. 366. Jewels, their cutting, a bad employment, ii. 166. Judgments, instinctive, i. 399. Job, book of, its purpose, iii. 53. K Keystones, how mismanaged in Renaissance work. See Venetian Index, under head "Libreria." Knowledge, its evil consequences, iii. 40; how to be received, iii. 50, &c. See "Education." L Labor, manual, ornamental value of, i. 407; evils of its division, ii. 165; is not a degradation, ii. 168. Labyrinth, in Venetian streets, its clue, ii. 254. Lagoons, Venetian, nature of, ii. 7, 8. Landscape, lower schools of, i. 24; Venetian, ii. 149; modern love of, ii. 175, iii. 123. Laws of right in architecture, i. 32; laws in general, how permissibly violated, i. 255, ii. 210; their position with respect to art, iii. 96; and to religion, iii. 205. Leaves, use of, in ornamentation, i. 232 (see "Vegetation"); proportion of, ii. 128. Liberality, how symbolized, ii. 333. Life in Byzantine architecture, ii. 133. Lilies, beautiful proportions of, ii. 128; used for parapet ornaments, ii. 242; lily capitals, ii. 137. Limitation of ornament, i. 254. Lines, abstract use of, in ornament, i. 221. Lintel, its structure, i. 124, 126. Lion, on piazzetta shafts, iii. 238. Load, of arches, i. 133. Logic, a contemptible science, iii. 105. Lombardic architecture, i. 17. Lotus leaf, its use in architecture, i. 233. Love, its power over human life, iii. 137. Lusts, their power over human nature, how symbolized by Spenser, ii. 328. Luxury, how symbolized, ii. 342; how traceable in ornament, iii. 4; of Renaissance schools, iii. 61. M Madonna, Byzantine representations of, ii. 53. Magnitude, vulgar admiration of, iii. 64. Malmsey, use of, in Feast of the Maries, iii. 117. Marble, its uses, iii. 27. Maries, Feast of the, iii. 117. Mariolatry, ancient and modern, ii. 55. Marriages of Venetians, iii. 116. Masonry, Mont-Cenisian, i. 132; of walls, i. 61; of arches, i. 133. Materials, invention of new, how injurious to art, iii. 42. Misery, how symbolized, ii. 347. Modesty, how symbolized, ii. 335. Monotony, its place in art, ii. 176. Months, personifications of, in ancient art, ii. 272. Moroseness, its guilt, iii. 130. Mosaics at Torcello, ii. 18, 19; at St. Mark's, ii. 70, 112; early character of, ii. 110, iii. 175, 178. Music, its relation to color, iii. 186. Mythology of Venetian painters, ii. 150; ancient, how injurious to the Christian mind, iii. 107. N